paulfcraven
New member
Can anyone give me advice on retro-fit tyre pressure monitors and which are the best ones to fit?
Tyre pressure monitors
- Thread starter paulfcraven
- Start date
From my experience with aftermarket TPMS, if you use TyrePal you must fit metal valve stems. They appear to be great because their design means you don't need to change the valves but with rubber valves the weight of the TyrePal sensors (they replace the caps on the valves) cause the rubber valve stems to bend at speed and the sensors dig into and damage your wheels. OK, it's only half an inch of damage, but it lets the corrosion start. I'm now using Orange TPMS (used to be sold as TyreSure in UK) on all my cars and spare wheel sets.
Interesting, especially as all of my OEM sensor batteries are now dead. How do aftermarket ones compare cost wise with the OEM TPMS? Also I assume aftermarket ones still work with the pressure display on the PCM... I have been waiting until I need new tyres given its not good for the rubber rim seal to take tyres on and off again just for fitting new sensors.
Your experience regarding wheel damage is interesting. I have TyrePal valves on my 997 Sport Designs and have not experienced this (after 15 laps of Silverstone GP). I have a set of Lobster Claws on at the moment (with some part worn tyres) that I will use up at lower loop of TopGear track at Dunsfold Park on Sunday. Can only just clip 100MPH on the straight but I will check the rims for damage and report back. Apart from this, I've found TyrePal to be very accurate. I had to recalibrate it at Silverstone as my PS2s increased in pressure to the point that the alarm went off! Three of the sensors are 100% accurate with my Michelin electronic gauge and one reads 0.1 bar below. I challenged TyrePal on this but they said it is within tolerance! I've also put a set on my son's Golf as he's a lazy so-and-so and never checks his pressures - it's my biggest safety bugbear - uneven tyre pressures!
paulfcraven
New member
Thanks for your experience and advice. I have been told that a German make called Alligator is suitable for my GTS at a cost of £199 plus fitting. Does anyone know about these?
I have never had any wheel damage with Tyrepal. The Orange sensors are good but need to be fitted inside the wheel, the benefit of tyrepal is you fit them and easy job and very transferable to another vehicle. I ave had the orange sensors in the past but would now only use tyrepal for the above reasons.
Same experience here, I have run them on the Autobahn (Mark, we were both on the 2013 Factory Tour) at >170mph and have never had any marking of wheels due to centrifugal force acting on the valves. However my 2012 vintage Tyrepal sensors recently started to fail to record changes in pressure (new batteries did not fix this) so I now need to buy another set/make.
For Club members there's an article on TPM's in the 997 Register technical section. You just look in the index and click on the link, but to save you the trouble, it's here [link=https://www.porscheclubgb.com/forum/tm.asp?m=844521&mpage=1&key=??]https://www.porscheclubgb.com/forum/tm.asp?m=844521&mpage=1&key=??[/link] Regards, Clive.
Comedy prices from OPC: Sensors = £476.83 Valves = £80.55 Valves fitting = £115.50 Coding = £135 TOTAL = £807.88 incl VAT ...for what is effectively replacing 4 batteries. Whoever thought that would be a cost effective solution?! Even the above 'cheaper' option is £300 incl VAT for parts. I think I'm going to wait until I need new tyres, then find a local tyre place that can order the parts trade, then fit with the tyres. Then I will see if the auto detect built into the PCM is enough, if not I will take the car to a local Porsche Indy and get them to set it.
Hi Ralph - that was a great tour and I will definitely go again sometime. Interesting no one else has seen this problem - I had it on all four wheels - maybe my rubber valve stems were a particularly weedy variety!
I've a set of Genuine Porsche 997 Turbo Wheels with Porsche TPM which I would sell for £1000. Includes delivery to Warrington UK. Better solution than above and you can fit winter tyres when needed or track tyres.
MattDC2
Member
jonathanw said:
Just wondered where you store the TyrePal receiver? Is it designed to sit on permanently on the dash?
I like the look of the ones which plug into your cigarette lighter port (Steelmate type) as hoping it could be concealed in the 997 ashtray cubby hole? Anyone know if they do? Or if they're any good?
MattDC2 said:
I don't try to make mine easily viewable, the display is too small and it is just another distraction. I just want to be able to hear any warning sounds and hope not to hear the pinging sound if there is low pressure. I just plug it into a power socket (otherwise murphy's law says you'll forget to charge the battery and panic on hearing the low battery warning pinging whilst doing 160 on the autobahn) and I leave it in the adjacent passenger footwell storage net.
It does not give the same psi readings as a proper tyre pressure gauge, only 1 or 2 psi (consistent) difference but not good enough for setting pressures accurately.
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